<?php

/**
 * Created by PhpStorm.
 * User: Yao Jun
 * Date: 2018/6/17
 * Time: 16:38
 * File name: index.php
 */
class A
{
    
    public $a = null;
    public $b = null;
    public $c = null;
    
    public function __construct ()
    {
        
    }
    
    public function index ()
    {
        
    }
    
    public function adds ()
    {
        $this -> a = 132;
        $this -> b = 456;
        $this -> c = 999;
    }
    
    public function o ()
    {
        $this -> c = 123;
    }
    
    public static function yaojun ()
    {
        echo '大家好';
        echo 123;
    }
    
    public static function yao (  )
    {
        echo 1123;
        exit;
    }
}
